that和what能充当句子中的成分吗

问题描述:

that和what能充当句子中的成分吗
到底是that还是what能充当句子中的成分?到底是咋回事尼(⊙o⊙)?

都可以.
that作为指示代词时可以充当句子主语或宾语,如:That is a dog./I like that.
that特可以作为引导词引导宾语从句.
what在疑问句中置于句首,充当汉语中的宾语成分,如:What is this?
what也可以引导从句.